baber/WOPTO huggingface dataset:
Patent CA-1111160-A (CA)
Inventor: DAWSON DAVID G
IPC: C04B24/26
Filed: 1979-02-22
Granted: 1981-10-20
Abstract: ABSTRACT        High Strength Cementitious Compositions In  Canadian Patent Application 264,611 we have described cured polymer-containing cementitious compositions of high modulus of rupture. The cured compositions are made by curing the product of subjecting to a homogenisation process comprising high shear mixing (e.g. extrusion or calendering) the ingredients hydraulic cement, water and a selected water-dispersible polymer. The polymer is selected by a test which determines thermally its effect on the cement hydration reaction. The present invention describes the use in similar compositions of a class of water-dispersible acidic polymer, not selected by the above-mentioned test, which contains a specified proportion of carboxyl groups.        Shaped products comprised of the new cured compos-itions of high modulus of rupture are useful, for example, in building applications where previously it was necessary to employ asbestos in admixture with the cement.
Patent CA-1127844-A (CA)
Inventor: LINDBLAD OSKAR L
IPC: A01M23/24
Filed: 1979-03-27
Granted: 1982-07-20
Abstract: A b s t r a c t The invention relates to an animal trap comprising a tunnel shaped housing, which is open at one of its ends, at the opening or entrance end of which housing a clamping means is provided, which is movable in the cross direction of the housing, said clamping means being released by actuation of a sensing organ located behind the same.
Patent CA-1074532-A (CA)
Inventor: SUZUKI MASAHIRO
IPC: C22C23/00
Filed: 1979-06-21
Granted: 1980-04-01
Abstract: ABSTRACT OF THE DISCLOSURE          A method for the manufacture of a magnesium composite is capable of causing hydrogen generation upon contact with water.  The method allows at least one member selected from the group consisting of iron, nickel, zinc, chromium and manganese prepared in the form of a metal power or an oxidized metal powder to be attached to the surface of magnesium by means of pressurized friction in an amount of 0.01 - 30% by weight based on magnesium.
Patent CA-1140416-A (CA)
Title: Solar energy collector and system
Inventor: MCELWAIN JOHN A
IPC: F24S10/70
Filed: 1979-07-23
Granted: 1983-02-01
Abstract: Abstract of the Disclosure A solar collector whose absorber plate is made of a conventional building material, e.g., tile, stucco, concrete or the like, and forms the outer surface, e.g., wall or roof, of the building.  The fluid to be heated, typically air, flows behind the absorber rather than between an absorbing plate and a cover of glass or other transparent material, and heat is trans-ferred to the fluid by metal conductors which extend from adjacent the out-side surface of the absorber to, and define at least part of the flow passage.          The system includes a cold tank of liquid in which heat is stored at a relatively low temperature, a heat tank of liquid at a relatively higher temperature; and a heat pump for transferring heat from the cold tank to the heat tank.  There is a cold exchanger in the cold tank. for receiving heated fluid from the collector and transferring heat therefrom to the liquid in the cold tank, and a heat exchanger in the heat tank for the transferring heat from the liquid in the heat tank to the air used to heat the building interior.
Patent CA-1118452-A (CA)
Inventor: SMITH CHARLES A
IPC: C07C45/48
Filed: 1979-08-03
Granted: 1982-02-16
Abstract: 12,159 PRODUCTION OF PROPIOPHENONE     ABSTRACT OF THE DISCLOSURE            In the production of propiophenone by a vapor-phase, cross-decarboxylation process, an undesirable by-product, isobutyrophenone, is suppressed by addition of water or steam to the reactant stream.         SPECIFICATION
Patent CA-1132204-A (CA)
Title: Dynamic mos-logic integrated circuit comprising a  separate arrangement of combinatory and sequential  logic elements
Inventor: MULDER CORNELIS
IPC: H03K19/096
Filed: 1979-09-06
Granted: 1982-09-21
Abstract: ABSTRACT:     An integrated circuit in dynamic MOS logic is composed of combinatory and sequential logic elements. Each of the latter comprises a succession of an input gate, an intermediate gate and an output gate which are activated to conduct by a corresponding phase Or the first one and subsequent phases of a clock pulse cycle. The combinatory logic elements are all composed of gates of a single type, while the input signals are applied via the sequential logic elements and the output signals are output again via the latter elements. Thus, in the combinatory network only a sole type of interference is still relevant.
Patent CA-1140726-A (CA)
Inventor: CLARKE DAVID R
IPC: B22D29/00
Filed: 1979-11-01
Granted: 1983-02-08
Abstract: D-3,478  C-3,043 Abstract of the Invention A sound-sealing sand trap for rotary acoustic sand-core shakeouts including bottom-opening, sand-funneling chutes beneath each decoring station and an open-centered tray beneath the sand-funneling chutes.  The tray includes a sand-supporting shelf bound on its outer periphery by a sand-level-retaining rim, and on its inner periphery, an edge defining the central opening.  Debris entering the tray from the chutes is readily removable through the central opening either manually by the operator or automatically by the plowing action of the chutes through the sand bed.
Patent CA-1210776-A (CA)
Title: Process for the preparation of esters of dihalovinylcyclopropanecarboxylic acids
Inventor: KONDO KIYOSI
IPC: C07C69/74
Filed: 1979-11-07
Granted: 1986-09-02
Abstract: ABSTRACT OF THE DISCLOSURE:    Novel syntheses of certain cyclopropanecarboxylates, including potent insecticides, are described.  The pro-cesses begin with the reaction between an alkenol and an orthoester to produce a .gamma.-unsaturated carboxylate, fol-lowed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.
Patent CA-1137742-A (CA)
Inventor: KRAKOW HEINZ
IPC: B23B3/06
Filed: 1979-11-08
Granted: 1982-12-21
Abstract: ABSTRACT OF THE DISCLOSURE     Apparatus for axially rotatably clamping a cylindrical hollow body during weld coating of the hollow body to increase the wall thickness thereof has a pair of supports for opposite ends of the body, the supports each comprising a plurality of support members which are radially adjustable within the hollow body for releasably clamping the latter.  The supports are mounted on co-axial cylindrical members, which in turn are rotatably supported on rollers.
Patent CA-1160441-A (CA)
Inventor: GROOTHUIS GERRIT J
IPC: B26B19/04
Filed: 1979-11-16
Granted: 1984-01-17
Abstract: 6.9.79                                   PHN,9277 "ABSTRACT": "Shaving apparatus".     The invention relates to a shaving apparatus having a shear plate with hair entry apertures and a cutting member which is drivable relative to the shear plate and which is provided with cutting elements.               In such a shaving apparatus it may happen that as a result of the forces occurring during hair cutting the shear plate is locally lifted off the cutting member, which has an adverse effect on the operation of the apparatus. In order to avoid this drawback each cutting element of the cutting member is constituted by a filamen-tary cutter provided with a supporting lamella.
Patent CA-1139745-A (CA)
Inventor: FOGLIO MAURIZIO
IPC: C07F9/568
Filed: 1979-11-22
Granted: 1983-01-18
Abstract: ABSTRACT OF THE DISCLOSURE              The object of the invention is a process for the preparation of new compounds having an anti-infectious action.              The compound corresponds to formula (1).                                           (1) wherein R= H, alkyl or a similar radical, R1 is in particular -CH2OH or -CH2NHCOR2, R2 is an alkyl, aryl or aralkyl or a heterocyclic ring having five or six elements containing one or more heteroatoms.              These compounds, or the pharmaceutically acceptable salts thereof, may be used in the treatment of infectious deseases.
Patent CA-1142453-A (CA)
Inventor: FURNESS KENNETH M
IPC: B01D21/00
Filed: 1979-12-10
Granted: 1983-03-08
Abstract: ABSTRACT The present invention is directed to a method and apparatus for maintaining steady state conditions in a separator. Steady state is maintained by controlling mass flow rates of influent to, and underflow from the separator. Specifically, an influent specific gravity and flow rate signals are monitored by an influent mass flow controller. That controller responds to variation in these signals to maintain a constant mass feed rate into the separator. A mass flow signal, comprising a composite of influent specific gravity and influent mass flow signals, is pro-duced. That signal is fed to a thickener controller which also monitors mass flow of the underflow. The thickener controller adjusts the mass flow rate of the underflow in response to the influent mass flow signal. However, fluctuation of an interface level between clear and unclear areas of the thickener can effect flow rate adjustment. The purpose of such an override is correction for errors in the mass control signal as well as for changes in flocculant feed rate. This invention can be adapted to operate a system containing multiple solid-liquid separation devices.
Patent CA-1096619-A (CA)
Inventor: MCGURK STANLEY E
IPC: A47G1/06
Filed: 1979-12-11
Granted: 1981-03-03
Abstract: Abstract of the Disclosure A mounting unit for mounting a print, or the like, between a pane of glass or sheet of translucent plastic and a backing board.  The unit has a mounting plate with means for connecting the plate to the back of the backing board adjacent an edge of the board.  A U-shaped mounting channel fits loosely over the edges of the sandwiched glass/plastic, print and board, and the connected plate.  Wedges fit between one side of the connected plate and the mounted channel to clamp the glass and board tightly between the other side of the plate and the channel.  The wedge also cooperates with locking means on the plate and channel to lock the channel to the plate.
Patent CA-1105341-A (CA)
Inventor: JOHNSON JOHN L B
IPC: A01F12/00
Filed: 1979-12-19
Granted: 1981-07-21
Abstract: ABSTRACT OF THE DISCLOSURE     An improved self-propelled grain harvester and thrashing machine characterized by an improved thrashing assembly exhibiting on-the-go adjustment capabilities which allows upper and lower cone thrashing units to be moved toward or away from one another thereby contracting or expanding the spacing therebetween defining the thrashing or rubbing area.  The machine also includes collection and storage containers, and separate means for discharging the thrashed wheat, as well as the chaff.
Patent CA-1139467-A (CA)
Inventor: MAITRE XAVIER C
IPC: H04J1/02
Filed: 1980-01-02
Granted: 1983-01-11
Abstract: A B S T R A C T   O F   T H E   D I S C L O S U R E     Transmission system of frequency division multiplex signals on a digital link. At the transmitting end of the digital line, the frequency division multiplex signals are sampled and coded into n-bit sample words. These sample words are transcoded into p-bit on-line words with p smaller than n through a transcoding procedure which makes a plurality k of successive levels of the n-bit code correspond to one and the same level of the p-bit code. The number k is selected depending on the maximal level reached by a sample word in a block of successive sample words.          The number L is transmitted to the receiving end of the digital link by a control word for reverse transcoding of the on-line p-bit words into reconstituted n-bit sample words.
Patent CA-1140777-A (CA)
Inventor: ALEKHIN STANISLAV A
IPC: E21B21/00
Filed: 1980-01-16
Granted: 1983-02-08
Abstract: METHOD FOR CONTROLLING THE DISPERSING OF SOLIDS    IN DRILLING MUD                 Abstract of Disclosure A method for monitoring the dispersing of solids in drilling mud by measuring the concentration of particles of the solid phase, consisting in that the concentration of particles is determined from the variation of drilling mud mineralization.
Patent CA-1126079-A (CA)
Inventor: WALDROP T WILLIAM
IPC: A01F15/08
Filed: 1980-03-26
Granted: 1982-06-22
Abstract: AUTOMATIC BALE EJECTION DRIVE                     ABSTRACT OF THE DISCLOSURE         In a crop roll forming machine having a reversibly rotatable bale forming means and a drive means there is provided a control means affixed to the frame movable between at least a first position and a second position for cooperative interaction with the drive means and the bale forming means to selectively cause the bale forming means to cease being driven in a first direction and cause it to be driven in an opposing second direction when the control means is moved from the first position to the second position so that a completed crop roll is ejected rearwardly from the machine onto the ground.
Patent CA-1198797-A (CA)
Inventor: PHILLIPS EDWARD H
IPC: H01L21/68
Filed: 1980-03-27
Granted: 1985-12-31
Abstract: ABSTRACT    In an X-Y addressable workpiece positioner, the workpiece to be positioned, such as a semiconductive wafer to be sequentially exposed at different regions thereof in accordance with a pattern of a mask, is disposed for movement with a work stage along coordinate X and Y axes.  The work stage has a two-dimensional array of X and Y coordinate addressing indicia enclosed within a border and affixed to the work stage for movement therewith. A portion of an enlarged image of the array of addressing indicia is projected onto a sensor stage to derive an output indicative of the X and Y coordinates of the array of addressing indicia relative to the position of the sensor stage.  The X and Y coor-dinates of the array of addressing indicia are sensed through addressing indicia recognition windows of the sensor stage and are differentially compared to remove unwanted background effects. Concomitantly, the border is sensed through border sensing windows of the sensor stage to provide a frame of reference for the sensed X and Y coordinates of the array of addressing indicia.  The sensed X and Y coordinates of the array of addressing indicia are compared with the X and Y coordinates of a selected addressed position of the work stage to derive an error output.  In response to this error output the work stage is moved to the selected addressed position so as to position a region of the workpiece for exposure in accordance with the pattern of the mask.  The work stage is sequentially moved to succeeding addressed positions in the same manner to position each of the remaining regions of the workpiece for exposure in accordance with the pattern of the mask.
Patent CA-1144659-A (CA)
Title: Semiconductor structure and manufacturing  method
Inventor: FEIST WOLFGANG M
IPC: H01L29/737
Filed: 1980-04-14
Granted: 1983-04-12
Abstract: SEMICONDUCTOR STRUCTURE AND MANUFACTURING METHOD       Abstract of the Disclosure A semiconductor structure is provided by forming an isolation region in a portion of a semiconductor layer, forming a doped region in the semiconductor layer adjacent the isolation region, such doped region having a conductivity type opposite the conductivity type of the semiconductor layer, selectively masking a surface of the semiconductor layer exposing a portion of the doped region adjacent to the isolation region, and selectively etching the exposed portions of the adjacent doped region forming a depression having converging side walls separated from the isolation region by portions of the doped region.  The semiconductor layer is an epitaxial layer providing the collector region of a transistor.  The bottom portion of the depression is lightly doped to provide an active base region for the tran-sistor.  The active base region is electrically connected to the base contact through the more heavily doped region formed in the semiconductor layer.  A doped polycrystalline silicon layer is formed over the bottom portion of the depres-sion in contact with the active base region to provide an emitter contact for the transistor.
Patent CA-1151959-A (CA)
Inventor: JOHNSON CHRISTIAN E SR
IPC: C23F1/28
Filed: 1980-04-17
Granted: 1983-08-16
Abstract: TITLE:   ULTRA-BLACK COATING DUE TO SURFACE MORPHOLOGY  INVENTOR:  CHRISTIAN E. JOHNSON, SR.     ABSTRACT OF THE DISCLOSURE      The invention provides a method of producing an ultra-black surface coating, having an extremely high light absorption capacity, on a substrate, such as a metal, ceramic, glass, or plastic, the blackness being associated with a unique surface morphology consisting of a dense array of microscopic pores etched into the surface, as well as the resulting coated substrate.        The method involves preparing the substrate for plating with a nickel-phosphorus alloy, as by cleaning and/or activating it, immersing the thus-prepared sub-strate in an electroless plating bath containing nickel and hypophosphite ions in solution until an electroless nickel-phosphorus alloy coating has been deposited on the substrate, and then removing the substrate, coated with the electroless nickel-phosphorus alloy, from the plating bath and washing and drying it.        The dried substrate, coated with the electroless nickel-phosphorus alloy, is then immersed in an etchant bath consisting of an aqueous solution of citric acid, wherein the nitric acid concentration ranges from a 1:5 ratio with distilled or de-ionized water to concentrated, until the coated surface of the substrate develops ultra-blackness, the blackness being associated with the surface morphology as described above.        The resulting substrate, covered with the ultra-black coating is thereafter washed and dried.        The ultra-black surface, which has a spectral reflectance on the order of about from 0.5 to 1.05 at wavelengths of light of about from 320 to 2140 nano-meters, finds use as a solar collector in the field of solar energy.
Patent CA-1146864-A (CA)
Title: Veterinary preparations for ruminant  animals
Inventor: BREWER MALCOLM D
IPC: A61M31/00
Filed: 1980-06-26
Granted: 1983-05-24
Abstract: - ABSTRACT -Veterinary Preparations for Ruminant Animals This invention provides veterinary preparations capable of being retained in the rumen of ruminants and providing the slow release of medicament within the rumen, said retention and release obviating the necessity of repeat dosing.            The preparations each comprise a slow-release formulation consisting of a veterinary medicament in a solid or semi-solid matrix, the formulation being enclosed in a plastics envelope which is permeable to rumen fluids, capable of constraint to allow per os administration and capable of being retained in the rumen by movement from this constraint.            Suitable medicaments include feed supplements, systemic insecticides, detergents, antibiotics and antiparasitics, and growth promotants.
Patent CA-1150243-A (CA)
Inventor: NAGATSU TOSHIHARU
IPC: G01N33/82
Filed: 1980-07-04
Granted: 1983-07-19
Abstract: ABSTRACT OF THE DISCLOSURE         Pterin derivatives are described having the formula (I)        (I) wherein R represents a hydroxyphenyl group, a radio-iodinated hydroxyphenyl group, a tyraminocarbonyl group, a radioiodinated tyraminocarbonyl group, a proteinocarbonyl group or a carboxy group; Q represents a straight or branched chain alkylene group having having 1 to 6 carbon atoms; and R6 and R7 each represents a hydrogen, an alkyl group having from 1 to 6 carbon atoms, a hydroxyalkyl group having from 1 to 6 carbon atoms; and a radio-immunoassay method is described using a radioiodinated 4-hydroxy-2-tyraminopteridine derivative or a radioiodinated 4-hydroxy-2-tyraminocarbonylalkylaminopteridine derivative as the tracer.
Patent CA-1154232-A (CA)
Inventor: DEWEY JOHN L
IPC: C01B21/42
Filed: 1980-07-09
Granted: 1983-09-27
Abstract: NITRIC ACID RECONSTITUTION         ABSTRACT OF THE DISCLOSURE     There is described a process for the recon-stitution of NOX gases to nitric acid comprising the steps of:           1.   contacting the NOX gases in counter-current relationship in one or more packed columns with cooled 50 to 60 percent nitric acid to remove as nitric acid a major portion of the originally introduced NOX values and provide an acid solution leaving the column having a temperature below about 180°F;           2.  compressing the residual gases from step 1 to from about 2 to about 6 atmospheres absolute; and 3. contacting the compressed gases from step 2 with from about 50 to about 60 percent nitric acid in a packed absorption column in counter-current relationship to remove substantially all of the remaining NOX values from the gas stream.
Patent CA-1147384-A (CA)
Inventor: BECKER MICHAEL
IPC: H02H7/00
Filed: 1980-07-21
Granted: 1983-05-31
Abstract: ABSTRACT A system for protecting a transmission network from short circuit conditions at the input of filter circuitry connected to a single phase or a multiple phase transmission network.  A signal is produced which corresponds to the current flowing from the transmission network to the filter circuit. The signal is filtered by a low-pass filter for attenuating its harmonic con-tent and converted into a direct current signal which corresponds in amplitude to the fundamental frequency component of the current flowing to the filter circuit.  Means are provided for disconnecting the filter circuit from the transmission network when the amplitude of the direct current signal exceeds a predetermined threshold level.
Patent CA-1140838-A (CA)
Inventor: ZAHID ABDUZ
IPC: F15B1/08
Filed: 1980-08-22
Granted: 1983-02-08
Abstract: Abstract of the Disclosure The present invention is directed to a hydraulic accumulator device which may be built at low cost and which includes an elastomeric bladder member and a button or valve component adapted to seat on the oil port when pressures in the gas chamber exceed the pressure in the hydraulic line and to unseat when the pressure conditions are reversed.  The device includes a button carried by the bladder positioned to seat on the oil port and is characterized by the button, bladder, and oil port having certain critical dimensional inter-relationships which greatly reduce the possibility of damage  to the bladder and consequent failure of the accumulator.
Patent CA-1149043-A (CA)
Inventor: KOUNTZ KENNETH J
IPC: F25B1/053
Filed: 1980-09-02
Granted: 1983-06-28
Abstract: EVAPORATOR INLET WATER TEMPERATURE          CONTROL SYSTEM          Abstract:        An evaporator inlet water temperature control system (80) for controlling the inlet water temperature of an evaporator utilized in an inverter driven centrifugal chiller.  The system creates the proper chilled water set point at the evaporator outlet needed to maintain the inlet water at its set point for greater efficiency of operation. Control is accomplished by generating an electrical error signal (85) which is a function of an inlet water set point voltage and the actual inlet water temperature.  A logic signal (93) is produced as a function of the error signal detected by the circuit and establishes a dead zone band representing a range in which the error signal is acceptable.  Output of the control system is passed to the capacity control circuit (50) of an inverter driven centrifugal compressor chiller.  When the inlet water temperature reaches its set point during pull-down, the logic output of the circuit (90) sets a flip-flop (92) which enables transmission gates (106,108,109) to control changes in the outlet water set point as needed to balance the load of the cooling system.